How can I add procedural porcelain cracks?
The closest that I could find procedurally is something like the following, but the brick pattern really is Too consistent, that's why I tried to break up the mix with the musgrave texture, and the Random values for the monotony of the brick pattern (see below for the node arrangement).



Here's the Result on a sphere - keep in mind, it's not all that impressive, but should serve as a good basis to build from should you pursue it further.





I have another attempt here, and thought if we could some how mix the structures, we would have a pretty good method. So here it goes: